Register-signal for measured-service telephone-exchange systems.



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No. 828,419. PATENTED AUG. 14-, 1906.

v S -F. R.'M 0BERTY.

REGISTER SIG AL'EOE MEASURED SERVICE TELEPHONE EXCHANGE SYSTEMS.

APPLICATION FILED 0GT.7, 1905.

. To all whom it may concern: Be it known that I, FRANK R. MOBERTY, a.

UNITED STATES PATENT OFFICE.

FRANK R. MoBERTY, OF EVANSTON. ILLINOIS, ASSIGNOR TO WESTERN ELECTRIC COMPANY, ILLINOIS.

Oh CHICAGO, ILLINOIS, CORPORATION OF REGISTER-SIGNAL FOR MEASURED-SERVICE TELEPHONE-EXCHANGE SYSTEMS Specification of Lettersv Patent.

Application filed October I, 1905- Serial No- 281.743.

citizen of the United States, residing at Evanston, in the county of Cook and State of Illinois', have invented acertain new and useful Improvement in Register Signals for Measured-Service Tele' hone-Exchange :Systems, of which the fol owing concise, andexaot description.

My invention relates to telephone exchange systems of the measured-service class,

in which a register or coin-collector is provided at eachsubscribers station, 0 erated and-controlled by the joint work of t e sub-- scriber and operator. When the o erator sends current over the line to ,centrol t e coin or.register,.as the case may be, it is especially desirable that she should have some checksignal, so that she ma ,be advised that'the articular work intendhd has'been done as,

or example, the deposit of the coin the return of the coin,or the movement or non-movement of the register.

My invention relates to special apparatus for doing this work and includes a substationmeter circuit and a locking-relay for the operator, the construction and arrangement being such that when the operator sends current to cause the register or coin-collector to move or operate in any articular way she will receive a signal bac indicating that the Work .has been performed, and in case the opera tor repeats the act immediately thereafter her signal-back indicator will remain inert.

Thus there'will be a double' check kept upon the behavior of the register or coin-collector. The prior art.is shown in Patent No.

665,874 to Albert M. Bullard, granted January 15, 1901. -I mention also Patent No.

728,309 to Charles E. Scribner, of May 19,-

My invention will be more readily understood by reference to the accompanying drawlhe subsoribers switching apparatus is of .the usual constructionand is connected bya telephone-line circuit with the central office switchboard in the well-known way.

At the-substation I have shown a register comprising the push-key a, the polarized electromagnet .b, the centrally pivoted armature 0 thereof, and the lever (Z, the latter beis a full, clear,

1 to tilt its armature c.

rocked anticlockwise, the pawl e, carried by.

ing adapted to be thrown out of engagement with the key a whenever the armature c is rocked in either direction.

It will be observed that when the ush-key a is closed the catch 9 of the lever d engages the said key to hold the same closed, and thus maintain the circuit through the electromagnet until the ma et becomes excited en the armature is the armature, will act to turn the ratchetwheel fin the same direction, and when the said armature is rocked clockwise the pawl will ride over the teeth of the ratchet-wheel, and so will not advance the wheel. We will consider the ratchet-wheel f .as the means whereby power is applied to do whatever work is desired, whether in a register or in a coin-collector. My invention resides more particularly in the relays h and i, the lamp Patented Aug. 14, 1906. l

signals 7c and Z and the circuits thereof, and

the combination of said relays and circuits with the substation service-meter. The subscriber in order to signal presses upon the push-key a, thus closing circuit of the battery m through line-relay m to ground through the polarized electromagnet b. The line-signal m is thus dis layed, and the operator inserts answering-p ug ninto answeringjack 'n, and, connectin her tele hone, is now in communication wit the su scriber, who will have taken down his receiver. Thejinsertion of the lug has served to out ofi the 0 into osition.' en the conversation is fimshe ,the subscriber will restore his receiverto the switch, thus Withdrawing the transmission-current from the lin'e. The reline-signal an brin the supervisory signal magnet being excited as key 1) is de ressed,

' the armature will be tilted to move t e'pawl and so rotate the ratchetwheel f inthe positive or anticlockwise direction. In case the line wanted was busy or there was failure to be turned. The locking lever-d will, however,

, complete connection the operator will send i of the plus sign by depressing key g.

as previously stated, be'thrown away fromengagement with the push-button, so that the circuit at the push-button will now be open.

designed to provide a checlcsignal for the operator in order that she may have a signal before her to indicate whether or not the signaling-current, minus or plus, as the case may be, has accomplished the desired result in the movement of the ratchet-wheel f or whatever mechanical medium is emplo ed for doing the work of keeping tall sult I effect by means of the relays h '1'. and the signals 7c Z, the said si nals being controlled desired reeach by its-correspon ing relay. it will :be observed thatwhen key p is depressed the contact 1' is closed to battery m through the sig- I k. The closing of current through nal-lam one of the coils of relay it acts to close the relay-contact at 1". The two contacts at rand r" are thus closed at the same time-and the remaining coil of the rela is brought into multiple arc with the s'i lamp 7c, and thus the annature of relay hold the signal 7c displayed as long as thekey p, and consequently thecontact-springrfremains depressed. The al leis thus mainis locked in position to e tained in displayed'pos'ition, so as to be observed by the operator. As 'a matter of precaution or further test the operator, after seeing the signal, works thekey p a second time, and in case the register has operated as it should the circuit will be 0 en at the pushkey a, and hence relay h not be op'leigated and the signal 7c notbe displayed 1; 0nd time. a

The description of relay It applies equally to relay 'itha't is to say, the line wanted being found busy, lkey is depressed, closing contact s to'battery, t e contacts of relay & will be closed by the current of plus sent through the olarized electromagnet ol the re is'ter, and te si al 'Zwill be displayed and key a and releasing .t e same by the move-' ment .of lever (1 whenever the armature "c is rocked form no part of the present invention.

My invention herein therefore doesnot inhe' d displayed. 638111.130? may then menipulate key "g a seco time, "and in case-the work has been rly done at the register clude the special features of the service-meter except as combined with the locking-relays h and t or one of them.

I have described the key p as connected with the branch including the minus current. It is of course evident that lus current sent through the olarized relay might be adapted to give the positive si nal or signal that the meter had been worked to count one tally or to deposit a coin Forconvenience-of illustration the battery m has been i'll'ustrated at four different places in the drawing. In rac- As previously indicated, my invention is tice asin le storage battery is employe While have shown the signal-lamps 7c and Z in multiple are with the second coils, respeo tively, of their relays, I do not wish to limit myself to such arrangement, since other modifications will suggest themselves to those familiar with the subject.

I claim 7 I s 1. A relay having two coils, one coil being included in a circuit containing a source of current and an electromagne't, said circuit extending from a central oflice to a substation, two points of control being included said circuit, one point at a central station and the other at the meter of the substation, the electromagnet bein a art of said meter; the other coil of said re ay eing included in a local circuit having two points ol. control, one point being adapted to be closed when the point of control at the central station of the circuit through the first-mentioned coil is closed, and the other point of control of the local circuit being closed on the attraction of the armature when the relay is excited, combination a signal-lamp controlled by the relay; whereby the operator is notified by the continuous glowing'of the lamp of the making of a tally at the meter, substantially as and for the purpose specified.

2. A relay having two coils, one cdilbeing included in a. circuit containing a'source of current and an electromagnet, said circuit extending from a central ollice to a substation, two points of control being included in said circuit, one point ata central station and the other at the meter of the substation, the

electromagnet being a part of said meter, the

other coil of ,isaid relay being included in a local circuit having two points of control, one point being adapted to be closed when the point of control at the central station of the circuit through the first-mentioned coil is closed, and the other point of control of the local circuit being closed on the attraction of the armature when the relay is excited, in combination with a signal-lamp; whereby the operator is notified by the continuous glowing of the lamp of the making of a tally at the meter, substantially as and for'the purpose specified.

p 3. The combination with the cord-circuit of a measured-service telephone exchange ei-separate coil included a'different branch cuit belonging to. the relay thereof, a second contact for each local circuit which is closedwhen the relay thereofis excited; and second windings, one for each relay, and'a signallamp for each, the said winding and lamp of' a'particular relay-being included in the local circuit; whereby the operator .is informed of the actions of the meter, substantially as and for the purpose specified.

I Y of a telephone-exchange, of two relays,'each relay having two windings, one winding of each being included-in adifl'erentbranch circuit, each branch including a'source of,

current, the current in each branch being of-a different polarity from that of the other branch,:said branches being adapted to be" closed at will to a line'lcading from the con 4 tral office to asubscribers'station, said line being utilized for transmission. of voice-currents, in combination with the said .meter,

including a polarized electromagnet, a-cen- -trallyivoted, armature therefor, a locking.-

lever moved thereby when the armature 1s. oscillated in either direction, a key or circuit closer afor controlling the circuitthrough gslthemeteg 'with which the locking-lever is adapted to 'e ngage, said circuit-closer being adapted to be closed and locked in'position by theact ofthe subscriber, and tobe re-- I leased on current of either polarity-being di-l I :4 re;

rected through" thepolarize magnet, sat lays being each provided with its own local cir cuit including a second winding, two contacts or p'oints'of control in' said local circuit, one l of said contacts, as r or 8, being closed when 'be energized b currents -inother contact, asr or s, being adaptedto be closed or left open acc'ordi ly as the circuit is'fo'und complete or incomp ete'at the switch 5. In a telephone toll system, the combi- Y nation with a subscribers line-circuit and a -'local circuit at the central station, of a meter at the substation-including a lockin -'switch contact in, the line-circuit adapte to be closed by the-subscriber in setting the meter, and Jan electrom'agnet adapted to open said contact in restoring'the meter, a switch at the central office under the control of the operator, having contacts in both line and local I 1 circuits and a test-signal atthe central oflice 4. The combination at -thecentra'l stationv controlled by, an,electroma%net adapted to 0th line and 10- cal circuits an to be lockedin said local cir- '6. In. a'; telephone t'ol1 'system,'the combithe'b'ranch containing the main of 5 therelay-thereofis directed to line, and the nation with a subscriberfs' line-circuit and a- 1 localcirc'uit at the central station, of ameter at'thesubstation includin a locking switch contact in the line-circuit a apted tobe closed by the subscriber iii setting the, meter, and an electromagnet' adapted'to open-said contact in restoring the meter, 9. switch at, the.

central 'ofiice 'under'the control of the operae '75 tor,- having contacts in both line and ocal circuits anda'test-signal at'thecentral' ofiice controlled by'anelectromagnet', said electro ma 'et having two windi In' witness lwhereo I hereunto subscribe my name this l 9thdayof August, A..D. 1905.

. FRANK nutniznrr- Witnesses-;- v

Ror. T1; ALLowAY,

i F. Bmunrnm one included. in --sa1 linecircuit andone H10 uded in said local 

